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index.html
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<html>
<style type="text/css">
body {
margin-left: 40%;
margin-top: 10%;
background-color: black;
}
h2 {
font-family: monospace;
color:red;
font-size: 3em;
}
</style>
<body>
<div id="head">
<h2> Survival Game </h2>
</div>
<canvas id="ctx" width="500" height="500" style="border:1px solid #000000;"></canvas>
<script src="js/Entities.js"></script>
<script>
var ctx = document.getElementById("ctx").getContext("2d");
ctx.fillStyle = "white";
ctx.font = '30px Arial ';
ctx.mozImageSmoothingEnabled = false; //better graphics for pixel art
ctx.msImageSmoothingEnabled = false;
ctx.imageSmoothingEnabled = false;
var WIDTH = 500;
var HEIGHT = 500;
var timeWhenGameStarted = Date.now(); //return time in ms
var frameCount = 0;
var score = 0;
var paused = false;
var Img = {};
Img.player = new Image();
Img.player.src = "img/player.png";
Img.bat = new Image();
Img.bat.src = 'img/bat.png';
Img.bee = new Image();
Img.bee.src = 'img/bee.png';
Img.bullet = new Image();
Img.bullet.src = 'img/bullet.png';
Img.upgrade1 = new Image();
Img.upgrade1.src = 'img/upgrade1.png';
Img.upgrade2 = new Image();
Img.upgrade2.src = 'img/upgrade2.png';
testCollisionRectRect = function(rect1,rect2){
return rect1.x <= rect2.x+rect2.width
&& rect2.x <= rect1.x+rect1.width
&& rect1.y <= rect2.y + rect2.height
&& rect2.y <= rect1.y + rect1.height;
}
document.onmousedown = function(mouse){
if(mouse.which === 1)
player.pressingMouseLeft = true;
else
player.pressingMouseRight = true;
}
document.onmouseup = function(mouse){
if(mouse.which === 1)
player.pressingMouseLeft = false;
else
player.pressingMouseRight = false;
}
document.oncontextmenu = function(mouse){
mouse.preventDefault();
}
document.onmousemove = function(mouse){
var mouseX = mouse.clientX - document.getElementById('ctx').getBoundingClientRect().left;
var mouseY = mouse.clientY - document.getElementById('ctx').getBoundingClientRect().top;
mouseX -= WIDTH/2;
mouseY -= HEIGHT/2;
player.aimAngle = Math.atan2(mouseY,mouseX) / Math.PI * 180;
}
document.onkeydown = function(event){
if(event.keyCode === 68) //d
player.pressingRight = true;
else if(event.keyCode === 83) //s
player.pressingDown = true;
else if(event.keyCode === 65) //a
player.pressingLeft = true;
else if(event.keyCode === 87) // w
player.pressingUp = true;
else if(event.keyCode === 80) //p
paused = !paused;
}
document.onkeyup = function(event){
if(event.keyCode === 68) //d
player.pressingRight = false;
else if(event.keyCode === 83) //s
player.pressingDown = false;
else if(event.keyCode === 65) //a
player.pressingLeft = false;
else if(event.keyCode === 87) // w
player.pressingUp = false;
}
update = function(){
if(paused){
ctx.fillText('Paused',WIDTH/2,HEIGHT/2);
return;
}
ctx.clearRect(0,0,WIDTH,HEIGHT);
Maps.current.draw();
frameCount++;
score++;
Bullet.update();
Upgrade.update();
Enemy.update();
player.update();
ctx.fillText(player.hp + " Hp",0,30);
ctx.fillText('Score: ' + score,200,30);
}
startNewGame = function(){
player.hp = 10;
timeWhenGameStarted = Date.now();
frameCount = 0;
score = 0;
Enemy.list = {};
Upgrade.list = {};
Bullet.list = {};
Enemy.randomlyGenerate();
Enemy.randomlyGenerate();
Enemy.randomlyGenerate();
}
Maps = function(id,imgSrc,width,height){
var self = {
id:id,
image:new Image(),
width:width,
height:height
}
self.image.src = imgSrc;
self.draw = function(){
var x = WIDTH/2 - player.x;
var y = HEIGHT/2 - player.y;
ctx.drawImage(self.image,0,0,self.image.width,self.image.height,x,y,self.image.width*2,self.image.height*2);
}
return self;
}
Maps.current = Maps('field','img/map.png',1280,960);
player = Player();
startNewGame();
setInterval(update,40);
</script>
</body>
</html>